Kohler KG40 Operation page 90

For KG40, KG45, KG50, KG60 (Kohler Engine KG6208), use the following:
See Figure 37 and Figure 38.
Natural Gas Operation

Disconnect 78/78a and 70G/70R from the fuel valve.

Disconnect 49 and N17.

Connect 77/77a and 70H/70T to the fuel valve.
LPG Vapor Operation

Disconnect 77/77a and 70H/70T from the fuel valves.

Connect 78/78a and 70G/70R to the fuel valves.

Connect 49 and N17.
Auto Changeover Natural Gas/LPG Vapor Operation
Automatic changeover dual fuel systems are factory connected. No changes to the electrical connections for a dual fuel system
are required in the field. The connections are shown in the next table and in the connection diagrams following the table for
reference.
Harness Natural Gas
QCON-14,
77/77a QCON-15
(NG fuel valve)
QCON-12,
70H/70T QCON-13
(NG fuel valve)
N17
QCON-14
N31
(NG fuel valve)
49
49a
QCON-15
77
(NG fuel valve)
78/78a
70G/70R
N32
78/78B1
70K
78B
49/49B
45C
N17/N17B
63
N16
Figure 37 Gaseous Fuel Electrical Connections, KG40–KG60
90
LPG Vapor
not used
not used
not used 49, QCON-10
not used
not used N17, QCON-9 (LPG fuel valve)
not used 49, QCON-11
not used
not used QCON- 19 (LPG fuel valve)
not used QCON- 16/QCON- 17 (LPG fuel valve)
not used QCON- 17 (LPG fuel valve)
not used QCON- 19 (LPG fuel valve)
not used not used
not used not used
LFP3-NO
LFP2-NC
LFP2-COM
LFP1- NC (Optional alarm)
LFP1- COM (Optional alarm)
Auto Changeover
QCON-15
(NG fuel valve)
QCON-12/
QCON-13
(NG fuel valve)
LFP2-COM
QCON-14
(NG fuel valve)
LFP2-NC
QCON-15
(NG fuel valve)
Reset Box
Reset Box
TP-6694 6/22